How was Otto Hahn awarded the Noble Prize?

Name: Otto Hahn
Country: Germany
Date of Bitrh: March 8, 1879 (Frankfurt am Main Germany)
Date of Death: July 28, 1968 (Göttingen Germany)
Subject of Study: Nuclear fission, Protactinium-231, Radioactivity and Radiothorium
Noble Prize Year: Nobel Prize for Chemistry in 1944 for the discovery of nuclear fission with the radiochemist Fritz Strassmann.